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<?php |
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namespace GraphQL\Benchmarks\Utils; |
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use GraphQL\Language\AST\DocumentNode; |
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use GraphQL\Language\AST\FieldNode; |
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use GraphQL\Language\AST\NameNode; |
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use GraphQL\Language\AST\OperationDefinitionNode; |
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use GraphQL\Language\AST\SelectionSetNode; |
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use GraphQL\Language\Printer; |
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use GraphQL\Type\Definition\FieldDefinition; |
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use GraphQL\Type\Definition\InterfaceType; |
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use GraphQL\Type\Definition\ObjectType; |
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use GraphQL\Type\Definition\WrappingType; |
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use GraphQL\Type\Schema; |
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use GraphQL\Utils\Utils; |
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use function count; |
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use function max; |
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use function round; |
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class QueryGenerator |
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{ |
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private $schema; |
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private $maxLeafFields; |
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private $currentLeafFields; |
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public function __construct(Schema $schema, $percentOfLeafFields) |
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{ |
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$this->schema = $schema; |
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Utils::invariant(0 < $percentOfLeafFields && $percentOfLeafFields <= 1); |
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$totalFields = 0; |
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foreach ($schema->getTypeMap() as $type) { |
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if (! ($type instanceof ObjectType)) { |
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continue; |
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} |
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$totalFields += count($type->getFields()); |
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} |
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$this->maxLeafFields = max(1, round($totalFields * $percentOfLeafFields)); |
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$this->currentLeafFields = 0; |
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} |
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public function buildQuery() |
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{ |
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$qtype = $this->schema->getQueryType(); |
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$ast = new DocumentNode([ |
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'definitions' => [new OperationDefinitionNode([ |
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'name' => new NameNode(['value' => 'TestQuery']), |
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'operation' => 'query', |
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'selectionSet' => $this->buildSelectionSet($qtype->getFields()), |
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]), |
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], |
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]); |
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return Printer::doPrint($ast); |
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} |
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/** |
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* @param FieldDefinition[] $fields |
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* |
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* @return SelectionSetNode |
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*/ |
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public function buildSelectionSet($fields) |
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{ |
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$selections[] = new FieldNode([ |
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'name' => new NameNode(['value' => '__typename']), |
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]); |
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$this->currentLeafFields++; |
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foreach ($fields as $field) { |
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if ($this->currentLeafFields >= $this->maxLeafFields) { |
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break; |
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} |
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$type = $field->getType(); |
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if ($type instanceof WrappingType) { |
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$type = $type->getWrappedType(true); |
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} |
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if ($type instanceof ObjectType || $type instanceof InterfaceType) { |
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$selectionSet = $this->buildSelectionSet($type->getFields()); |
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} else { |
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$selectionSet = null; |
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$this->currentLeafFields++; |
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} |
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$selections[] = new FieldNode([ |
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'name' => new NameNode(['value' => $field->name]), |
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'selectionSet' => $selectionSet, |
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]); |
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} |
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$selectionSet = new SelectionSetNode([ |
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'selections' => $selections, |
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]); |
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return $selectionSet; |
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} |
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} |
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simPod /
graphql-php
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